Patent EP0351026A2 successfully refreshed from Google Patents.
EP0351026A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Fiber-reinforced composites toughened with elongated rigid particles
Assignee: BP Corp North America Inc
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Filing: 1989-07-14
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Granted: —
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Expires: 2009-07-14
Abstract
Abstract Layered, fiber-reinforced composites are toughened by including elongated particles such as flakes or flock. The method of the invention is particularly effective in improving the toughness of composites based on thermoset matrix resins.
Inventors
- 👤 Daniel H Hecht
- 👤 Hugh C Gardner
- 👤 Shahid P Qureshi
- 👤 Peter W Manders
- 👤 Richard H Newman-Evans
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 20:29
CPC Classifications
C; C08; C08L; C08L63/00; C08J; C08J5/00; C08J5/04; C08L101/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
72 words
A curable matrix resin formulation comprising from 99 to 75 wt% of a thermoset resin, characterized in that it further contains from 1 to 25 wt% of flake or fiber flock particles having an aspect ratio greater than 2:1 and a smallest dimension in the range of from 1 to 75 microns formed of a rigid material selected from the group consisting of polyamide, polyimide, oxidized polyacrylonitrile, carbonized polyacrylonitrile, and mixtures thereof.
Claim 2
Dependent Claim
72 words
A curable matrix resin formulation comprising from 99 to 75 wt% of a thermoset resin, characterized in that it further contains from 1 to 25 wt% of flake or fiber flock particles having an aspect ratio greater than 2:1 and a smallest dimension in the range of from 1 to 75 microns formed of a rigid material selected from the group consisting of polyamide, polyimide, oxidized polyacrylonitrile, carbonized polyacrylonitrile, and mixtures thereof.
Claim 3
Dependent Claim
51 words
The curable matrix resin formulation of claim 1, characterized in that said thermoset resin is an epoxy resin formulation comprising 100 pbw of an epoxy resin having a plurality of epoxy groups, from 6 to 150 pbw of an amine hardener and from 0 to 30 pbw of a thermoplastic polymer.
Claim 4
Dependent Claim
101 words
A curable matrix resin formulation, characterized in that it comprises (a) from 99 to 75 wt% of an epoxy resin formulation comprising 100 pbw of a cycloaliphatic epoxy ether, from about 6 to 150 pbw of a diamine hardener and up to 30 pbw of a thermoplastic polymer, and (b) from 1 to 25 wt% of flake or flock particles having an aspect ratio greater than 2:1 and a smallest dimension in the range of from about 1 to 75 microns formed of a rigid material selected from the group consisting of polyamide, polyimide, oxidized polyacrylonitrile, carbonized polyacrylonitrile, and mixtures thereof.
Claim 5
Dependent Claim
101 words
A curable matrix resin formulation, characterized in that it comprises (a) from 99 to 75 wt% of an epoxy resin formulation comprising 100 pbw of a cycloaliphatic epoxy ether, from about 6 to 150 pbw of a diamine hardener and up to 30 pbw of a thermoplastic polymer, and (b) from 1 to 25 wt% of flake or flock particles having an aspect ratio greater than 2:1 and a smallest dimension in the range of from about 1 to 75 microns formed of a rigid material selected from the group consisting of polyamide, polyimide, oxidized polyacrylonitrile, carbonized polyacrylonitrile, and mixtures thereof.
Claim 6
Dependent Claim
39 words
The curable matrix resin formulation of claim 1 or 3, characterized in that said particles are fiber flock formed of fibers selected from the group consisting of polyacrylonitrile fibers, polyamide fibers, oxidized polyacrylonitrile fibers, carbon fibers, and mixtures thereof.
Claim 7
Dependent Claim
18 words
The curable matrix resin formulation of claim 1 or 3, characterized in that said particles are polyimide flakes.
Claim 8
Dependent Claim
16 words
A shaped article wholly or partially consisting of a curable matrix resin according to claims 1-5.
Claim 9
Dependent Claim
16 words
A shaped article wholly or partially consisting of a cured matrix resin according to claims 1-5.
References Cited (Backward Citations)
No citation records indexed.
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